arm: mx6: cm-fx6: move cm-fx6 target under ARCH_MX6

cm-fx6 is an MX6 based board, and the menuconfig hierarchy should
reflect that. Make TARGET_CM_FX6 dependant on ARCH_MX6.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>

arch/arm/Kconfig

@@ -625,14 +625,6 @@ config RMOBILE
 	bool "Renesas ARM SoCs"
 	select CPU_V7
 
-config TARGET_CM_FX6
-	bool "Support cm_fx6"
-	select CPU_V7
-	select SUPPORT_SPL
-	select DM
-	select DM_SERIAL
-	select DM_GPIO
-
 config ARCH_SOCFPGA
 	bool "Altera SOCFPGA family"
 	select CPU_V7

arch/arm/cpu/armv7/mx6/Kconfig

@@ -29,6 +29,14 @@ choice
 	prompt "MX6 board select"
 	optional
 
+config TARGET_CM_FX6
+	bool "Support CM-FX6"
+	select CPU_V7
+	select SUPPORT_SPL
+	select DM
+	select DM_SERIAL
+	select DM_GPIO
+
 config TARGET_SECOMX6
 	bool "Support secomx6 boards"
 	select CPU_V7

configs/cm_fx6_defconfig

 CONFIG_ARM=y
+CONFIG_ARCH_MX6=y
 CONFIG_TARGET_CM_FX6=y
 CONFIG_SPL=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,MX6QDL,SPL"